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Finding the Fourth Proportional to 660,008.64, 910,812.40 and 358,202.64

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Solution

The fourth proportional to 660,008.64, 910,812.40 and 358,202.64 is: 494,319.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,008.64 : 910,812.40 = 358,202.64 : x
  2. Step 2: Convert to fraction form
    660,008.64/910,812.40 = 358,202.64/x
  3. Step 3: Cross multiply
    660,008.64x = 910,812.40 × 358,202.64
  4. Step 4: Simplify right side
    660,008.64x = 326,255,406,224.74
  5. Step 5: Solve for x
    x = 326,255,406,224.74/660,008.64
  6. Step 6: Final answer
    x = 494,319.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.